package com.jiepier.filemanager.util;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.LinearLayout;

/**
 * Created by Jaeger on 16/2/14.
 * <p/>
 * Email: chjie.jaeger@gamil.com
 * GitHub: https://github.com/laobie
 */
public class StatusBarUtil {

  public static final int DEFAULT_STATUS_BAR_ALPHA = 112;

  /**
   * 设置状态栏颜色
   *
   * @param activity 需要设置的 activity
   * @param color 状态栏颜色值
   */
  public static void setColor(Activity activity, int color) {
    setColor(activity, color, DEFAULT_STATUS_BAR_ALPHA);
  }

  /**
   * 设置状态栏颜色
   *
   * @param activity 需要设置的activity
   * @param color 状态栏颜色值
   * @param statusBarAlpha 状态栏透明度
   */
  public static void setColor(Activity activity, int color, int statusBarAlpha) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
      activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      activity.getWindow().setStatusBarColor(calculateStatusColor(color, statusBarAlpha));
    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      // 生成一个状态栏大小的矩形
      View statusView = createStatusBarView(activity, color, statusBarAlpha);
      // 添加 statusView 到布局中
      ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
      decorView.addView(statusView);
      setRootView(activity);
    }
  }

  /**
   * 设置状态栏纯色 不加半透明效果
   *
   * @param activity 需要设置的 activity
   * @param color 状态栏颜色值
   */
  public static void setColorNoTranslucent(Activity activity, int color) {
    setColor(activity, color, 0);
  }

  /**
   * 设置状态栏颜色(5.0以下无半透明效果,不建议使用)
   *
   * @param activity 需要设置的 activity
   * @param color 状态栏颜色值
   */
  public static void setColorDiff(Activity activity, int color) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
      return;
    }
    activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    // 生成一个状态栏大小的矩形
    View statusView = createStatusBarView(activity, color);
    // 添加 statusView 到布局中
    ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
    decorView.addView(statusView);
    setRootView(activity);
  }

  /**
   * 使状态栏半透明
   * <p/>
   * 适用于图片作为背景的界面,此时需要图片填充到状态栏
   *
   * @param activity 需要设置的activity
   */
  public static void setTranslucent(Activity activity) {
    setTranslucent(activity, DEFAULT_STATUS_BAR_ALPHA);
  }

  /**
   * 使状态栏半透明
   * <p/>
   * 适用于图片作为背景的界面,此时需要图片填充到状态栏
   *
   * @param activity 需要设置的activity
   * @param statusBarAlpha 状态栏透明度
   */
  public static void setTranslucent(Activity activity, int statusBarAlpha) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
      return;
    }
    setTransparent(activity);
    addTranslucentView(activity, statusBarAlpha);
  }

  /**
   * 设置状态栏全透明
   *
   * @param activity 需要设置的activity
   */
  public static void setTransparent(Activity activity) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
      return;
    }
    transparentStatusBar(activity);
    setRootView(activity);
  }

  /**
   * 使状态栏透明(5.0以上半透明效果,不建议使用)
   * <p/>
   * 适用于图片作为背景的界面,此时需要图片填充到状态栏
   *
   * @param activity 需要设置的activity
   */
  public static void setTranslucentDiff(Activity activity) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
      // 设置状态栏透明
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      setRootView(activity);
    }
  }

  /**
   * 为DrawerLayout 布局设置状态栏变色
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   * @param color 状态栏颜色值
   */
  public static void setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout,
      int color) {
    setColorForDrawerLayout(activity, drawerLayout, color, DEFAULT_STATUS_BAR_ALPHA);
  }

  /**
   * 为DrawerLayout 布局设置状态栏颜色,纯色
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   * @param color 状态栏颜色值
   */
  public static void setColorNoTranslucentForDrawerLayout(Activity activity,
                                                          DrawerLayout drawerLayout, int color) {
    setColorForDrawerLayout(activity, drawerLayout, color, 0);
  }

  /**
   * 为DrawerLayout 布局设置状态栏变色
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   * @param color 状态栏颜色值
   * @param statusBarAlpha 状态栏透明度
   */
  public static void setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout,
      int color, int statusBarAlpha) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
      return;
    }
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
      activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
    } else {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    }
    // 生成一个状态栏大小的矩形
    View statusBarView = createStatusBarView(activity, color);
    // 添加 statusBarView 到布局中
    ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
    contentLayout.addView(statusBarView, 0);
    // 内容布局不是 LinearLayout 时,设置padding top
    if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) {
      contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0, 0);
    }
    // 设置属性
    ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);
    drawerLayout.setFitsSystemWindows(false);
    contentLayout.setFitsSystemWindows(false);
    contentLayout.setClipToPadding(true);
    drawer.setFitsSystemWindows(false);

    addTranslucentView(activity, statusBarAlpha);
  }

  /**
   * 为DrawerLayout 布局设置状态栏变色(5.0以下无半透明效果,不建议使用)
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   * @param color 状态栏颜色值
   */
  public static void setColorForDrawerLayoutDiff(Activity activity, DrawerLayout drawerLayout,
      int color) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      // 生成一个状态栏大小的矩形
      View statusBarView = createStatusBarView(activity, color);
      // 添加 statusBarView 到布局中
      ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
      contentLayout.addView(statusBarView, 0);
      // 内容布局不是 LinearLayout 时,设置padding top
      if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) {
        contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0, 0);
      }
      // 设置属性
      ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);
      drawerLayout.setFitsSystemWindows(false);
      contentLayout.setFitsSystemWindows(false);
      contentLayout.setClipToPadding(true);
      drawer.setFitsSystemWindows(false);
    }
  }

  /**
   * 为 DrawerLayout 布局设置状态栏透明
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   */
  public static void setTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout) {
    setTranslucentForDrawerLayout(activity, drawerLayout, DEFAULT_STATUS_BAR_ALPHA);
  }

  /**
   * 为 DrawerLayout 布局设置状态栏透明
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   */
  public static void setTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout,
      int statusBarAlpha) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
      return;
    }
    setTransparentForDrawerLayout(activity, drawerLayout);
    addTranslucentView(activity, statusBarAlpha);
  }

  /**
   * 为 DrawerLayout 布局设置状态栏透明
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   */
  public static void setTransparentForDrawerLayout(Activity activity, DrawerLayout drawerLayout) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
      return;
    }
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
      activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
    } else {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    }

    ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
    // 内容布局不是 LinearLayout 时,设置padding top
    if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) {
      contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0, 0);
    }

    // 设置属性
    ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);
    drawerLayout.setFitsSystemWindows(false);
    contentLayout.setFitsSystemWindows(false);
    contentLayout.setClipToPadding(true);
    drawer.setFitsSystemWindows(false);
  }

  /**
   * 为 DrawerLayout 布局设置状态栏透明(5.0以上半透明效果,不建议使用)
   *
   * @param activity 需要设置的activity
   * @param drawerLayout DrawerLayout
   */
  public static void setTranslucentForDrawerLayoutDiff(Activity activity,
      DrawerLayout drawerLayout) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
      // 设置状态栏透明
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      // 设置内容布局属性
      ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);
      contentLayout.setFitsSystemWindows(true);
      contentLayout.setClipToPadding(true);
      // 设置抽屉布局属性
      ViewGroup vg = (ViewGroup) drawerLayout.getChildAt(1);
      vg.setFitsSystemWindows(false);
      // 设置 DrawerLayout 属性
      drawerLayout.setFitsSystemWindows(false);
    }
  }

  /**
   * 添加半透明矩形条
   *
   * @param activity 需要设置的 activity
   * @param statusBarAlpha 透明值
   */
  private static void addTranslucentView(Activity activity, int statusBarAlpha) {
    ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);
    // 移除半透明矩形,以免叠加
    if (contentView.getChildCount() > 1) {
      contentView.removeViewAt(1);
    }
    contentView.addView(createTranslucentStatusBarView(activity, statusBarAlpha));
  }

  /**
   * 生成一个和状态栏大小相同的彩色矩形条
   *
   * @param activity 需要设置的 activity
   * @param color 状态栏颜色值
   * @return 状态栏矩形条
   */
  private static View createStatusBarView(Activity activity, int color) {
    // 绘制一个和状态栏一样高的矩形
    View statusBarView = new View(activity);
    LinearLayout.LayoutParams params =
        new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
            getStatusBarHeight(activity));
    statusBarView.setLayoutParams(params);
    statusBarView.setBackgroundColor(color);
    return statusBarView;
  }

  /**
   * 生成一个和状态栏大小相同的半透明矩形条
   *
   * @param activity 需要设置的activity
   * @param color 状态栏颜色值
   * @param alpha 透明值
   * @return 状态栏矩形条
   */
  private static View createStatusBarView(Activity activity, int color, int alpha) {
    // 绘制一个和状态栏一样高的矩形
    View statusBarView = new View(activity);
    LinearLayout.LayoutParams params =
        new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
            getStatusBarHeight(activity));
    statusBarView.setLayoutParams(params);
    statusBarView.setBackgroundColor(calculateStatusColor(color, alpha));
    return statusBarView;
  }

  /**
   * 设置根布局参数
   */
  private static void setRootView(Activity activity) {
    ViewGroup rootView =
        (ViewGroup) ((ViewGroup) activity.findViewById(android.R.id.content)).getChildAt(0);
    rootView.setFitsSystemWindows(true);
    rootView.setClipToPadding(true);
  }

  /**
   * 使状态栏透明
   */
  @TargetApi(Build.VERSION_CODES.KITKAT) private static void transparentStatusBar(
      Activity activity) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
      activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
      activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
    } else {
      activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    }
  }

  /**
   * 创建半透明矩形 View
   *
   * @param alpha 透明值
   * @return 半透明 View
   */
  private static View createTranslucentStatusBarView(Activity activity, int alpha) {
    // 绘制一个和状态栏一样高的矩形
    View statusBarView = new View(activity);
    LinearLayout.LayoutParams params =
        new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
            getStatusBarHeight(activity));
    statusBarView.setLayoutParams(params);
    statusBarView.setBackgroundColor(Color.argb(alpha, 0, 0, 0));
    return statusBarView;
  }

  /**
   * 获取状态栏高度
   *
   * @param context context
   * @return 状态栏高度
   */
  private static int getStatusBarHeight(Context context) {
    // 获得状态栏高度
    int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
    return context.getResources().getDimensionPixelSize(resourceId);
  }

  /**
   * 计算状态栏颜色
   *
   * @param color color值
   * @param alpha alpha值
   * @return 最终的状态栏颜色
   */
  private static int calculateStatusColor(int color, int alpha) {
    float a = 1 - alpha / 255f;
    int red = color >> 16 & 0xff;
    int green = color >> 8 & 0xff;
    int blue = color & 0xff;
    red = (int) (red * a + 0.5);
    green = (int) (green * a + 0.5);
    blue = (int) (blue * a + 0.5);
    return 0xff << 24 | red << 16 | green << 8 | blue;
  }
}
